I'm grateful to my friend John in England for this great video on the effect of introducing wolves into Yellowstone National Park. http://www.flixxy.com/how-wolves-changed-an-entire-ecosystem.htm
I had the pleasure of visiting the park last year and it is a wonderful place. We learned of the introduction of wolves back into their natural habitat, but these advantages were new to me. A sort of biological trickle down economics?
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